A pension fund is a pooled, professionally managed investment vehicle that collects contributions during your working years and pays them out as retirement income, held in a legal trust that is separate from the employer sponsoring it. That separation is the whole point: once money goes into the fund, it belongs to the plan and its participants, not to the company, and federal law — chiefly the Employee Retirement Income Security Act of 1974 (ERISA) — controls how it must be managed, disclosed, and paid out.
How the Money Is Held
A pension fund is set up as its own legal entity, distinct from the company that sponsors it. Retirement assets sit off the employer’s balance sheet and out of reach if the business runs into trouble. Contributions go into a trust for the benefit of participants.
Professional investment managers direct the capital into a mix of stocks, bonds, real estate, and other assets, aiming for long-term growth over decades while still paying today’s retirees. Federal rules require those managers to diversify holdings to reduce the risk of large losses and to weigh each investment’s expected return against comparable alternatives.1eCFR. 29 CFR 2550.404a-1 – Investment Duties
The Two Main Types of Pension Plans
Which type of plan you have decides who carries the investment risk and how your benefit is figured.
Defined Benefit Plans
A defined benefit (DB) plan promises a specific monthly payment in retirement, usually calculated from your years of service and salary history. The employer must contribute enough to cover those promises regardless of how the markets behave. If investments fall short, the employer makes up the difference.
Defined Contribution Plans
A defined contribution (DC) plan — 401(k)s, 403(b)s, and similar arrangements — runs through individual accounts. You and your employer put money in, and your eventual benefit depends entirely on contributions plus investment performance. For 2026, you can defer up to $24,500 of your own wages into a 401(k) or similar plan, with an additional $8,000 catch-up if you are 50 or older.2Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026 There is no guaranteed monthly check. The investment risk sits with you.
Cash Balance Plans
A cash balance plan is a hybrid. Legally it is a defined benefit plan, but it looks like a DC plan to participants: each year your account gets a pay credit (say, 5 percent of compensation) and an interest credit tied to a fixed rate or an index like the one-year Treasury bill rate.3U.S. Department of Labor. Fact Sheet – Cash Balance Pension Plans Because it is a DB plan under the law, the employer bears the investment risk and PBGC insurance applies. Vesting generally occurs after three years of service.
Vesting: When You Actually Own the Money
Vesting is when you have a permanent, non-forfeitable right to the employer-funded portion of your pension. Your own contributions are 100 percent yours immediately. The schedule for employer contributions depends on plan type.
- Defined benefit plans may use a five-year cliff schedule (nothing until year five, then full vesting) or a graded schedule that starts at 20 percent after three years and reaches 100 percent after seven.4Office of the Law Revision Counsel. 29 USC 1053 – Minimum Vesting Standards
- Defined contribution matching contributions must vest faster — either a three-year cliff or a graded schedule starting at 20 percent after two years and reaching 100 percent after six.5U.S. Department of Labor. FAQs About Retirement Plans and ERISA
Plans can always vest you faster than the minimums. Leave before you are fully vested and you forfeit the unvested employer contributions, a real cost that is easy to miss when weighing a job change.
What ERISA Requires
ERISA, codified beginning at 29 U.S.C. § 1001, is the primary federal law governing private-sector pension funds. It sets standards for how plans are run, what participants are told, and what happens when something goes wrong.6Office of the Law Revision Counsel. 29 USC 1001 – Congressional Findings and Declaration of Policy
Fiduciary Duty
Anyone managing a pension fund’s investments or administration is a fiduciary and must act exclusively in the interest of participants. Fiduciaries must diversify to minimize risk of large losses and must evaluate each investment on its expected risk and return relative to available alternatives. A fiduciary who breaches these duties can be held personally liable for losses the plan suffers.
ERISA also blocks self-dealing. A plan cannot lend money to, buy property from, or provide services to parties closely tied to the plan, such as the sponsoring employer, plan officers, or major shareholders.7Office of the Law Revision Counsel. 29 USC 1106 – Prohibited Transactions
What You Should Receive
Every plan participant must get a Summary Plan Description (SPD) explaining eligibility, benefits, vesting, and claims procedures in language “calculated to be understood by the average plan participant.”8Office of the Law Revision Counsel. 29 USC 1022 – Summary Plan Description Every DB plan must also send an annual funding notice showing the plan’s funded percentage — assets divided by liabilities — for the current year and the two preceding years, plus the plan’s investment policy, asset allocation, and any recent events that could materially affect its finances.9U.S. Department of Labor. Single-Employer Pension Plan Model Annual Funding Notice A funded percentage well below 100 percent is a signal to pay close attention to the PBGC coverage described next.
Creditor Protection
Every ERISA-covered pension must include a provision blocking benefits from being assigned to or seized by creditors.10Office of the Law Revision Counsel. 29 USC 1056 – Form and Payment of Benefits Lawsuits, bankruptcy, and debt collection generally cannot reach the money. The main exceptions are qualified domestic relations orders in divorce or family-support cases and certain federal tax levies.
Government pensions and some church plans fall outside ERISA and do not get this federal shield. Protection then depends on state law, and state law varies widely — some states fully exempt retirement assets, others protect only what is deemed necessary for support.
What Happens If the Plan Fails
The Pension Benefit Guaranty Corporation (PBGC) is a federal agency that insures defined benefit pension plans. If your employer’s DB plan fails because the company goes bankrupt or can no longer fund it, the PBGC steps in and pays benefits up to a legal maximum. Defined contribution plans like 401(k)s are not covered by this insurance.
Employers pay for the coverage through annual premiums. For single-employer plans with plan years beginning in 2026, the flat-rate premium is $111 per participant, with an added variable-rate premium if the plan is underfunded.11Pension Benefit Guaranty Corporation. Premium Rates
The guarantee has ceilings. For 2026, the maximum monthly benefit for a 65-year-old retiree receiving a straight-life annuity from a failed single-employer plan is $7,789.77. Taken as a joint-and-50-percent-survivor annuity for a same-age spouse, the cap is $7,010.79 per month.12Pension Benefit Guaranty Corporation. Maximum Monthly Guarantee Tables Retiring before 65 lowers the maximum, and benefit increases adopted within the five years before a plan’s termination may not be fully covered.
A plan that cannot pay all promised benefits can only be shut down through a “distress termination” if the employer proves it is in severe financial trouble — for example, bankruptcy liquidation, a court finding that the company cannot reorganize with the plan intact, or a determination that continuing the plan would prevent the business from operating.13Pension Benefit Guaranty Corporation. Distress Terminations The PBGC then takes over as trustee and uses plan assets plus its own funds to keep paying benefits within the legal limits.
Getting the Money Out
Once you are vested and reach the plan’s eligible retirement age, you can start drawing benefits. Your options depend on your plan.
Annuity or Lump Sum
Most DB plans offer at least two payout choices. A life annuity pays a monthly amount for the rest of your life. A lump-sum distribution pays out the present value of your benefit all at once, which you can roll into an IRA or another retirement account. The plan must give you a written explanation of these options at least 30 days before your annuity starting date, though you can waive that waiting period down to seven days.14Office of the Law Revision Counsel. 29 USC 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity
Take a lump sum without a direct rollover and the plan must withhold 20 percent for federal income taxes. You cannot opt out of that withholding.15Internal Revenue Service. Pensions and Annuity Withholding A direct rollover to another retirement plan or IRA avoids the withholding and keeps the money growing tax-deferred.16Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
Taxes
Pension distributions are generally taxed as ordinary income in the year you receive them. State treatment varies widely; some states tax pension income in full, some exempt it, and many fall in between with partial exclusions or age-based deductions.
Early Withdrawal
Pull money out before age 59½ and you generally owe an extra 10 percent tax on the taxable portion, on top of regular income tax.17Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions There are exceptions. One of the more flexible is the substantially equal periodic payments (SEPP) rule under Internal Revenue Code Section 72(t), which permits penalty-free distributions at any age if you commit to a series of payments calculated by an IRS-approved method and continue them for at least five years or until you turn 59½, whichever comes later.18Internal Revenue Service. Notice 2022-6 – Determination of Substantially Equal Periodic Payments Break the schedule early and the 10 percent tax comes back retroactively, plus interest.
Required Minimum Distributions
You cannot leave the money in forever. Under current law, required minimum distributions (RMDs) must begin by April 1 of the year after you turn 73.19Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs) If your employer plan allows it and you are still working, you may delay RMDs from that plan until you actually retire. After the first, each year’s RMD is due by December 31. The starting age moves to 75 in 2033.20Thrift Savings Plan. SECURE 2.0 and the TSP
Miss the full RMD and you owe a 25 percent excise tax on the shortfall. That drops to 10 percent if you correct the shortfall within two years.
Spouse Rules Most People Don’t Know About
Federal law gives strong protections to the spouses of pension plan participants. If you are married and covered by a DB plan, these rules apply automatically unless you and your spouse affirmatively opt out.
The default payment form for a married DB participant is a qualified joint and survivor annuity (QJSA): a reduced monthly benefit during your life that continues at 50 percent or more to your surviving spouse. Waiving the QJSA for a different payout, such as a single-life annuity or lump sum, requires your spouse’s written consent, witnessed by a plan representative or notary public.14Office of the Law Revision Counsel. 29 USC 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity
If a vested participant dies before retirement, the plan must pay the surviving spouse a qualified preretirement survivor annuity (QPSA). In a DB plan, the QPSA is generally the survivor benefit the spouse would have received had the participant retired the day before death. In an individual-account plan, the QPSA must be worth at least 50 percent of the vested account balance at the time of death. A plan may require a one-year marriage before death for the QPSA to apply.
Divorce is the one situation where pension benefits can be assigned to someone else. A qualified domestic relations order (QDRO) — a court order issued under state family law — can grant a spouse, former spouse, child, or dependent the right to a share of pension benefits.21U.S. Department of Labor. QDROs – The Division of Retirement Benefits Through Qualified Domestic Relations Orders A divorce settlement alone will not split pension assets. The order must identify the participant, the alternate payee, and the amount or percentage assigned, and must be submitted to the plan administrator for review.